20894555

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{59}}^1\times {\mathrm{137}}^1$

素因数の和:259

約数の個数: 32

約数和(自身を含む): 28615680

約数和(自身を除く): 7721125

約数列:

[1, 5, 11, 47, 55, 59, 137, 235, 295, 517, 649, 685, 1507, 2585, 2773, 3245, 6439, 7535, 8083, 13865, 30503, 32195, 40415, 70829, 88913, 152515, 354145, 379901, 444565, 1899505, 4178911, 20894555]

約数ペア:

[(1, 20894555), (5, 4178911), (11, 1899505), (47, 444565), (55, 379901), (59, 354145), (137, 152515), (235, 88913), (295, 70829), (517, 40415), (649, 32195), (685, 30503), (1507, 13865), (2585, 8083), (2773, 7535), (3245, 6439)]